| Post Name | Foreman - Kerala Ceramics Limited |
|---|---|
| Question Paper Code | 039/2026/OL |
| Category Code | 380/2024 |
| Date of Test | 5 March 2026 |
| Exam Type | Online Examination |
| Total Questions | 100 |
1
Which of the following statement is/are correct? Statement 1 : Soda acid type extinguishers or water shall be used for fighting oil or electrical fires. Statement 2 : Foam type extinguishers shall be used for fighting electrical fires.
Answer
D. None of these
2
No person shall act or be employed as a manager unless he is _____________ years of age and is paid by, and is directly answerable to, the owner or agent of the mine as per Metal Mine Regulation 1961.
Answer
C. 23
3
What is the primary function of an Auxiliary Fan?
Answer
D. To ventilate a face or faces or blind ends
4
In a stope, air analysis shows : Oxygen = 19.2%, Carbon dioxide = 0.48% Inflammable gas = 1.35% As per MMR, 1961, the stope shall be considered :
Answer
C. Unsafe due to inflammable gas
5
Which of the following represents the largest scale of a plan?
Answer
A. 1 cm represents 50 m
6
Which of the following statements is/are correct? Statement 1 : No working shall be made within 7.5 m of the boundary of any time. Statement 2 : In case of disputed boundary, workings may be made after approval of the mines manager.
Answer
A. Only Statement 1
7
Which mine plans may show surface contours?
Answer
D. All of the above
8
Match List-I with List-II with respect to average employment for appointment of officials in underground mines (MMR, 1961) : List-I List-II A. Assistant Managers or Underground Managers 1. Less than 75 B. First Class Manager's Certificate 2. 75-150 C. First- or Second-Class Manager's Certificate 3. More than 150 D. First- or Second-Class Manager's Certificate or a Managers 4. More than Permit 450 Choose the correct answer :
Answer
A. A-4, B-3, C-2, D-1
9
Match List-I with List-II with respect to different forms mentioned under First Schedule of MMR, 1961 : List-I List-II A. Form I 1. Notice of accident/dangerous occurrence B. Form III 2. Notice of Disease notified C. Form IV-A 3. Annual Return D. Form V 4. Notice of opening, closing or change etc. Choose the correct answer :
Answer
B. A-4, B-3, C-1, D-2
10
Match List-I with List-II and select the correct code for safe underground working conditions as per MMR, 1961 : List-I List- II A. Minimum distance from stoped-out or disused workings 1. 1.5 m B. Minimum length of advance precautionary borehole to detect likely 2. 2 m accumulation of inflammable or noxious gases C. Maximum width or height of workings around abandoned waterlogged 3. 30 workings shall not exceed m D. Minimum distance from disused or abandoned waterlogged workings 4. 60 m Choose the correct answer :
Answer
C. A-3, B-1, C-2, D-4
11
A worker suffers an injury on 1st June and resumes duty on 5th June. Considering the day of accident is excluded, the injury will be classified as :
Answer
A. Non-reportable
12
The Dhori Mine Disaster, which occurred on 28 May 1965 is recorded as one of the worst coal mine disasters in India. How many persons were killed in this accident?
Answer
A. 268
13
During the investigation of an underground mine accident, it was observed that engineering safeguards were functional and risk assessments had been formally documented. However, prescribed operating procedures were routinely by passed at the workplace. In such a scenario, the most technically appropriate corrective strategy would be :
Answer
B. Strengthening accountability through supervisory auditing, strict enforcement of SOPs, and reinforcement of safety culture
14
The Rajmahal Mine Accident that occurred in December 2016 at the Rajmahal Opencast Project (ECL) was primarily caused by :
Answer
C. Dump/Overburden slope failure
15
The Anjan Hill Explosion of Disaster (2010) occurred in an underground coal mine classified under which degree of gassiness?
Answer
B. Degree-I
16
In the investigation of a roof fall accident in an underground coal mine, which of the following would be most appropriately classified as a root cause rather than an immediate (direct) cause?
Answer
A. Inadequate installation and supervision of systematic roof bolting as per support plan
17
In an underground mine, the probability of a roof fall in a district is 0.02 per year and the potential financial consequences is Rs. 2 crore. What is the annual risk value?
Answer
B. Rs. 4,00,000
18
In an underground coal mine, methane (CH4) concentration is detected at 1.25% in the return airway during routine monitoring. No ignition occurs and no injury is reported. This situation is most appropriately classified as :
Answer
B. Dangerous occurrence
19
A technically sound accident investigation report in mining operations should present its findings in which of the following logical analytical sequences?
Answer
B. Incident description ® Immediate causes ® Root cause analysis ® Corrective and preventive measures
20
Which of the following conditions most significantly increases the risk of roof fall in an underground coal mine?
Answer
B. Presence of laminated shale roof with frequent bedding plane separations and inadequate support density
21
A rescuer without breathing apparatus enters a mine gallery containing 0.12% CO. At 0.1% CO, 50% Hb saturation occurs in 2 minutes. CO absorption rate is proportional to concentration. Time required for 50% haemoglobin saturation at 0.12% CO is closest to:
Answer
C. 1.7 min
22
A self-contained breathing apparatus (SCBA) contains 6 L of oxygen at 200 bar.A rescuer consumes oxygen at 1.8 L/ min (STP). Considering 20% reserve mandatory, the maximum safe operating time is approximately:
Answer
C. 533 min
23
In a mine employing 1200 workers, an occupational health survey found: 180 workers with early silicosis 60 workers with advanced silicosis The prevalence (%) of silicosis in the mine is:
Answer
D. 20%
24
In a 10-year cohort survey Group No. of workers Silicosis Cases Exposed 500 75 Non-exposed 400 20 Calculate Relative Risk.
Answer
C. 3.0
25
Permissible respirable dust limit = 3 mg/m³. A worker has TWA exposure of 2.8 mg/m³ for 6 hours. For the remaining 2 hours, what is the maximum allowable concentration so that the 8-hour TWA does not exceed the limit?
Answer
B. 3.6 mg/m³
26
The molecular weight of a gas is 44. If the molecular weight of air is 29, the specific gravity of the gas is approximately:
Answer
B. 1.52
27
In underground coal mines, methane-air mixtures become explosive only within a specific concentration range. Which of the following correctly represents the explosive (flammable) range of methane in air by volume?
Answer
B. 5%-15%
28
Which of the following statements regarding breathing apparatus used in mine rescue operations is CORRECT?
Answer
C. Closed-circuit breathing apparatus recirculates exhaled air after removing CO2 and supplementing oxygen, making it suitable for irrespirable atmospheres.
29
Silicosis is an occupational lung disease commonly observed among mine workers exposed to respirable dust.Which of the following statements regarding silicosis is CORRECT?
Answer
B. Silicosis results from inhalation of crystalline silica dust and leads to progressive fibrosis of lung tissue.
30
The BG4 breathing apparatus, used in mine rescue operations, is best described by which of the following statements?
Answer
B. It is a closed-circuit oxygen breathing apparatus capable of providing breathable air for up to 4 hours under controlled conditions
31
Assertion (A): The Safety Management Plan (SMP) is mandatory in coal mines. Reason (R): CMR 2017 requires systematic hazard identification and risk control measures. Choose the correct option:
Answer
A. Both Assertion (A) and Reason (R) are true, and (R) is the correct explanation of (A).
32
Assertion (A): Inundation risk assessment is mandatory when workings approach old water-logged workings. Reason (R): Sudden inrush of water may lead to multiple fatalities and mine closure. Choose the correct option:
Answer
A. Both Assertion (A) and Reason (R) are true, and (R) is the correct explanation of (A).
33
Assertion (A): Risk assessment in coal mines is a continuous process. Reason (R): Mining conditions such as strata behavior, gas emission, and equipment usage change over time. Choose the correct option:
Answer
A. Both Assertion (A) and Reason (R) are true, and R is the correct explanation of (A).
34
The ultimate objective of Safety Management Plan is:
Answer
B. Ensure zero harm
35
Which document outlines emergency escape routes?
Answer
C. Emergency Response Plan
36
In Indian mines, the Emergency Plan must be approved by:
Answer
C. DGMS
37
Assertion (A): A safety audit may reveal full statutory compliance, yet the mine may still carry high operational risk. Reason (R): Statutory compliance ensures legal conformity but does not automatically guarantee adequacy of risk controls for site-specific dynamic hazards. Choose the correct option:
Answer
A. Both Assertion (A) and Reason (R) are true, and (R) is the correct explanation of (A).
38
Fault Tree Analysis (FTA) is primarily used to:
Answer
C. Model logical combinations of failures leading to a top accident event
39
Which statement correctly distinguishes Safety Management Plan (SMP) and Disaster Management Plan (DMP)?
Answer
B. SMP focuses on prevention; DMP focuses on response and recovery
40
In an underground coal mine, methane ignition probability is 0.02 per year, and consequence analysis predicts 5 fatalities per event. The annual societal fatality risk is:
Answer
C. 0.1 fatalities/year
41
Which of the following characteristics best distinguishes intrusive igneous rocks from exclusive igneous rocks?
Answer
B. Coarse-grained texture with visible crystals
42
Which process is primarily responsible for the formation of chemical sedimentary rocks such as limestone and phosphates?
Answer
C. Precipitation of soluble products of chemical weathering
43
Which combination of geological processes is most likely to produce placer deposits of gold and platinum?
Answer
C. Chemical weathering ® mechanical transport ® sorting by natural agencies
44
Which statement correctly differentiates syngenetic and epigenetic magmatic ore deposits?
Answer
B. Epigenetic deposits from after the host rock, while syngenetic form simultaneously with the host rock
45
Which of the following is a foliated metamorphic rock?
Answer
C. Slate
46
In areas affected by multiple seam splitting and stone intrusions, what is the most critical precaution for roadway alignment?
Answer
B. Avoid entry into axial regions where upper splits rise into the roof
47
When encountering a washout filled with unconsolidated glacial material, what is the greatest immediate danger during drivage?
Answer
B. Rapid influx of loose sediments and water
48
While approaching a fault zone, which combined symptom most reliably indicates weakening of roof and potential for water/gas ingress?
Answer
B. Drag effects in strata + polished bedding surfaces in shales
49
Why do igneous intrusions such as sills pose significant danger to roof stability?
Answer
B. They create strong but brittle hard roofs that may collapse suddenly after mining larger area
50
What is the main precaution while approaching a roof roll?
Answer
C. Provide extra support because the basal surface is highly irregular
51
Which drilling pattern in underground mine development consist of parallel blastholes?
Answer
A. Burn cut
52
Which of the following best describes the function of lifters in development blasting?
Answer
B. To throw the blasted material
53
Which factor primarily governs the selection of burden and spacing in development blasting?
Answer
C. Blasthole diameter
54
Which drifting method requires the highest drilling accuracy?
Answer
D. Burn Cut
55
If a drift face shows good fragmentation but poor advance, the most probable cause is:
Answer
C. Cut design failure
56
In room and pillar mining, the primary cause of ore loss is:
Answer
D. Pillars requirement for ground support
57
If the ore is of oxidizing nature, then which underground mining method is NOT suitable?
Answer
A. Shrinkage stoping
58
The ultimate pit limit in open-pit mining is primarily NOT governed by:
Answer
A. Bench height
59
In surface mining, haul road gradient is kept as low as possible mainly to:
Answer
C. Improve truck productivity
60
The break even stripping ratio is defined as the ratio at which:
Answer
B. Revenue from ore equals total cost of mining ore and waste
61
From the figure shown below, what will be the influence of horizontal stress on the roadway stability considering an unsupported drivage
Answer
C. Roof deformation on the left hand side
62
The method of mining for rock salt in India is?
Answer
A. Room and Pillar
63
Based on the applicability criteria for CM deployment and the constraints for bord and pillar depillaring, which factor is the most critical single reason why CM-based depillaring would be unsafe in this panel?
Answer
C. The overlying waterlogged seam standing on pillars poses a major risk of water inrush and strata instability during caving-based depillaring
64
The blast pattern of a coal face shown in the figure represents
Answer
B. pyramid cut.
65
The primary purpose of cut holes for blasting in an underground drivage is to -
Answer
A. Provide additional free face
66
The mineral is transported downwards in different sections to the lower level and all the ore is carried to crusher at lowest level through?
Answer
C. Ore passes
67
As per Indian standards thick seam means having seam thickness
Answer
C. 4.5-9 m
68
In sand stowing generally the sand required for one tonne of coal extraction in virgin area?
Answer
A. 1.3 tonne
69
The angle of inclination from vertical of the line connecting the edge of the workings and the edge of the subsidence area is called?
Answer
B. Angle of draw
70
Which of the following machine is NOT used in Longwall mining?
Answer
D. Side Dump Loader
71
The place of the reserve station is appointed by
Answer
A. Mine Manager
72
Which of the following values represents the best value of in-hole VOD of the SME?
Answer
C. 4200 m/s
73
Ammonium Nitrate is called a blasting agent because ________. (i) It is an explosive in itself. (ii) When mixed in a fixed proportion with other chemicals, it becomes explosive. (iii) It is a custom to call it a blasting agent.
Answer
B. Option (ii) is correct
74
SME is loaded in the blast holes _______. (i) Using a pump truck (ii) Manually (iii) Sometimes manually and sometimes using a pump truck
Answer
A. Option (i) is correct
75
As the dominant excitation frequency of the ground vibration wave increases, the limiting value of the ppv at the foundation level of the structures _______.
Answer
B. Increases
76
Misfire is caused due to ______ (i) Poor quality of explosives (ii) Poor quality of initiating devices (iii) Faulty connections in the blast circuit
Answer
D. All the options (i), (ii) and (iii) are correct
77
In opencast mines, rock blasting is carried out in the afternoon because _____ (i) Desired rock fragmentation is obtained easily (ii) Noise is less as the air density is less during the afternoon (iii) Ground vibrations are less
Answer
B. Option (ii) is correct
78
What is the advantage of a shock tube over a detonating fuse? (i) Less Noise (ii) Less drilling is required (iii) Less explosive consumption happens
Answer
A. Option (i) is correct
79
Which of the following statements is wrong? (i) A shock tube is an example of a non-electric initiating device (ii) If required, cartridges of different explosives can be loaded in a blast hole (iii) Explosive cartridges put in a hole should be of the same diameter
Answer
B. Option (ii) is wrong
80
Which of the following statements is incorrect? (i) ANFO is used in watery holes (ii) Every explosive must have an oxidizing agent as one of its components (iii) SME is a water-based explosive
Answer
A. Option (i) is incorrect
81
Venturimeter is used to measure ______.
Answer
C. Rate of flow of water in a pipe
82
The correct sequence of attaching a cage to the winding rope in a mine shaft is _______.
Answer
A. Rope ® Cappel ® Detaching hook ® Bull chain ® Triangular plate ® Cage chain ® Cage
83
A rope in which the wires in the strands are laid in the same direction as the strands are laid in the rope is called ______.
Answer
B. Lang's lay rope
84
A gear has a pitch circle diameter of 70 mm and 10 teeth. The circular pitch is __________
Answer
C. 22 mm
85
Which of the following statements is/are correct? (i) Dumpers are crawler-mounted machines. (ii) Transportation of materials with the help of dumpers is considered as a continuous mode of transportation. (iii) Dragline is one of the excavators used in surface mines. (iv) Bucket wheel excavator is a giant excavator used for excavating soft coal or lignite.
Answer
B. Only (iii & iv)
86
Which of the following statements is/are correct? (i) Surface miner cuts the coal with the help of buckets. (ii) Surface miner cuts the coal from the floor with the help of a cutting drum. (iii) Load Haul Dumper (LHD) is used for loading and hauling in underground mines. (iv) Coal plough is employed in bord and pillar working method.
Answer
A. Only (ii) and (iii)
87
According to Bernoulli's theorem (neglecting friction), when a fluid flows through a passage, which of the following remains constant?
Answer
C. Total head
88
In a centrifugal pump, the ''eye of the impeller'' refers to ____.
Answer
B. The centre opening through which water enters
89
Why is priming required in a centrifugal pump before starting?
Answer
B. To fill the pump and suction pipe with water and remove air
90
Super-elevation on a railway track is provided to ________.
Answer
D. Balance the centrifugal force on curves
91
In a mine ventilation system, the resistances of two splits A and B are 0.5 Ns2/m8 and 2.0 Ns2/m8 respectively. Combined resistance of two shafts and trunk airways is 0.7 Ns2/m8. A quantity of 20 m3/s of air passes through split A. The total air power of the ventilation system in kW is
Answer
C. 24.9
92
Determine the correctness or otherwise of the following Assertion [a] and the Reason [r] : Assertion : Both intake and return side stoppings must be closed simultaneously in the event of sealing off a coal mine panel with explosion hazard following a fire. Reason : By continuously ventilating the area till simultaneous closure of the stoppings, the possibility of an explosion hazard due to gas build-up is avoided.
Answer
B. Both [a] and [r] are true and [r] is the correct reason for [a]
93
A gas mixture contains CH4, C2H6 and H2 with respective concentrations of 75%, 15% and 10% by volume. The lower explosibility limit of CH4, C2H6 and H2 are 5.0%, 3.3% and 4.2% respectively. The lower explosibility limit of the gas mixture, in percentage, is ______. Here are four suitable options :
Answer
B. 4.56%
94
At the inlet of a mine roadway, the dry and wet bulb temperatures of air are 38°C and 29°C, respectively. At the outlet, the corresponding temperatures are 32°C and 29°C, respectively. The process of heat transfer in the airway is described as
Answer
B. Sensible cooling
95
Underground coal mines are, in principle, ventilated by an exhausting system, so that
Answer
B. Fumes can be quickly removed in case of an underground fire
96
In a CO self-rescuer, the purpose of the calcium bromide and lithium chloride mixture is to
Answer
A. dry the incoming air
97
Choose the correct alternative In the context of ventilation plan symbols, match the following Symbol Description P 1. Temporary stopping Q 2. Regulator R 3. Air-crossing S 4. Ventilation stopping
Answer
A. P-3, Q-4, R-2, S-1
98
The device used to control airflow in underground mines is
Answer
A. Regulator
99
If airway resistance increased by 50%, the pressure required to maintain same quantity will increase by
Answer
B. 50%
100
If air density increases, Atkinson resistance will :
Answer
A. Increase
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